DTC P2677:00 [L5]

id0102c9851500

DTC P2677:00

Variable air duct (VAD) solenoid valve circuit high input

DETECTION CONDITION

•  The PCM monitors VAD solenoid valve control signal. If the PCM turns VAD solenoid valve on but voltage still remains high, the PCM determines that VAD solenoid valve circuit has malfunction.

Diagnostic support note

•  This is a continuous monitor (Other).

•  The MIL does not illuminate.

•  FREEZE FRAME DATA is not available.

•  The DTC is stored in the PCM memory.

POSSIBLE CAUSE

•  VAD solenoid valve malfunction

•  Connector or terminal malfunction

•  Short to power supply between VAD solenoid valve terminal B and PCM terminal 1K

•  Shorted VAD solenoid valve or PCM connector

•  PCM malfunction

DTC P2677:00	Variable air duct (VAD) solenoid valve circuit high input
DETECTION CONDITION	• The PCM monitors VAD solenoid valve control signal. If the PCM turns VAD solenoid valve on but voltage still remains high, the PCM determines that VAD solenoid valve circuit has malfunction. Diagnostic support note • This is a continuous monitor (Other). • The MIL does not illuminate. • FREEZE FRAME DATA is not available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE	• VAD solenoid valve malfunction • Connector or terminal malfunction • Short to power supply between VAD solenoid valve terminal B and PCM terminal 1K • Shorted VAD solenoid valve or PCM connector • PCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded?	Yes	Go to the next step.
1		No	Record FREEZE FRAME DATA on repair order, then go to the next step.
2	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	INSPECT POOR CONNECTION OF VAD SOLENOID VALVE CONNECTOR • Switch the ignition to off. • Disconnect the VAD solenoid valve connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the terminal and/or connector, then go to Step 7.
3		No	Go to the next step.
4	INSPECT VAD SOLENOID VALVE • Inspect the VAD solenoid valve. (See VARIABLE AIR DUCT (VAD) SOLENOID VALVE INSPECTION [L5].) • Is VAD solenoid valve normal?	Yes	Go to the next step.
4		No	Replace VAD solenoid valve, then go to Step 7. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L8, LF, L5].)
5	INSPECT POOR CONNECTION OF PCM CONNECTOR • Switch the ignition to off. • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the terminal and/or connector, then go to Step 7.
5		No	Go to the next step.
6	INSPECT VAD SOLENOID VALVE CONTROL CIRCUIT SHORT TO POWER SUPPLY • Switch the ignition to ON (Engine off). • Measure voltage between VAD solenoid valve terminal B and body ground. • Is voltage B+?	Yes	Repair or replace wiring harness for open circuit, then go to the next step.
6		No	Go to the next step.
7	VERIFY TROUBLESHOOTING OF DTC P2677:00 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear DTC from PCM memory using M‐MDS. • Perform the KOEO or KOER SELF TEST using the M‐MDS. (See KOEO/KOER SELF TEST [L8, LF, L5].) • Is the PENDING CODE same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [L8, LF, L5].)
7		No	Go to the next step.
8	VERIFY AFTER REPAIR PROCEDURE • Perform the “After Repair Procedure”. (See AFTER REPAIR PROCEDURE [L8, LF, L5].) • Is any DTC present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L8, LF, L5].)
8		No	Troubleshooting completed.